EP2255775A2 - Connecteur entre un cathéter pour gastrostomie et un tube d'alimentation en fluide - Google Patents

Connecteur entre un cathéter pour gastrostomie et un tube d'alimentation en fluide Download PDF

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Publication number
EP2255775A2
EP2255775A2 EP10004667A EP10004667A EP2255775A2 EP 2255775 A2 EP2255775 A2 EP 2255775A2 EP 10004667 A EP10004667 A EP 10004667A EP 10004667 A EP10004667 A EP 10004667A EP 2255775 A2 EP2255775 A2 EP 2255775A2
Authority
EP
European Patent Office
Prior art keywords
main body
gastrostomy catheter
external holding
tip end
fluid supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10004667A
Other languages
German (de)
English (en)
Other versions
EP2255775A3 (fr
EP2255775B1 (fr
Inventor
Kazuhiro Abe
Motonori Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Covidien LP
Original Assignee
Tyco Healthcare Group LP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tyco Healthcare Group LP filed Critical Tyco Healthcare Group LP
Publication of EP2255775A2 publication Critical patent/EP2255775A2/fr
Publication of EP2255775A3 publication Critical patent/EP2255775A3/fr
Application granted granted Critical
Publication of EP2255775B1 publication Critical patent/EP2255775B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0026—Parts, details or accessories for feeding-tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0015—Gastrostomy feeding-tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0026—Parts, details or accessories for feeding-tubes
    • A61J15/003—Means for fixing the tube inside the body, e.g. balloons, retaining means
    • A61J15/0034—Retainers adjacent to a body opening to prevent that the tube slips through, e.g. bolsters
    • A61J15/0038—Retainers adjacent to a body opening to prevent that the tube slips through, e.g. bolsters expandable, e.g. umbrella type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0026—Parts, details or accessories for feeding-tubes
    • A61J15/0053—Means for fixing the tube outside of the body, e.g. by a special shape, by fixing it to the skin
    • A61J15/0057—Means for fixing the tube outside of the body, e.g. by a special shape, by fixing it to the skin fixing a tube end, i.e. tube not protruding the fixing means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0026—Parts, details or accessories for feeding-tubes
    • A61J15/0053—Means for fixing the tube outside of the body, e.g. by a special shape, by fixing it to the skin
    • A61J15/0065—Fixing means and tube being one part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10—Tube connectors; Tube couplings
    • A61M39/1011—Locking means for securing connection; Additional tamper safeties
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M2025/0213—Holding devices, e.g. on the body where the catheter is attached by means specifically adapted to a part of the human body
    • A61M2025/0233—Holding devices, e.g. on the body where the catheter is attached by means specifically adapted to a part of the human body specifically adapted for attaching to a body wall by means which are on both sides of the wall, e.g. for attaching to an abdominal wall
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M2025/028—Holding devices, e.g. on the body having a mainly rigid support structure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/0247—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body
    • A61M2039/0255—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body for access to the gastric or digestive system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/0247—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body
    • A61M2039/0261—Means for anchoring port to the body, or ports having a special shape or being made of a specific material to allow easy implantation/integration in the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10—Tube connectors; Tube couplings
    • A61M2039/1027—Quick-acting type connectors

Definitions

  • the present invention relates to a connecting structure for a gastrostomy catheter and a fluid supply tube which are used for supplying a fluid such as nutrients or food in fluid form to the gastrointestinal tract of a patient.
  • the gastrostomy catheter generally comprises a tubular part which passes through a gastric fistula for ingestion which is formed in the patient's abdomen, an external holding part which is attached to the base end of the tubular part and placed on the surface of the skin at the abdomen, and an internal holding part which is attached to the tip end of the tubular part and is placed inside the gastrointestinal tract, in the stomach, for instance.
  • This kind of gastrostomy catheter is fitted in a gastric fistula formed in the patient's abdomen, and the wall of the gastrointestinal tract and the abdomen wall are fixed, after which a fluid supply tube is connected and fluid is supplied to the gastrointestinal tract via this fluid supply tube.
  • a flange is formed at the top of an adapter (external holding part), and legs which can engage with the flange of the catheter for establishing a gastric fistula are provided at the tip end of a feeding tube assembly (fluid supply tube).
  • the feeding tube assembly is designed to be connected in a state in which it is perpendicular to the longitudinal direction of the catheter for establishing a gastric fistula, and the tip-end opening thereof is formed to be perpendicular to the feeding tube of the feeding tube assembly.
  • a space which is the thickness of the flange from the tip-end opening is then provided in order to provide for the legs.
  • the base end of the legs is coupled to the tip end of the feeding tube assembly.
  • the fluid passage of the gastrostomy catheter and the fluid passage of the fluid supply tube which is connected to the gastrostomy catheter are at right-angles, and therefore the flow of fluid from the fluid supply tube to the gastrostomy catheter is not smooth. Furthermore, there are problems in that the fluid is likely to leak at the connection between the gastrostomy catheter and the fluid supply tube.
  • the present invention has been devised in order to resolve the problems mentioned above, and it aims to provide a connecting structure for a gastrostomy catheter and a fluid supply tube with which the gastrostomy catheter does not press the body, the flow of fluid is smooth, and leakage is unlikely to occur.
  • the connecting structure for a gastrostomy catheter and a fluid supply tube lie in the fact that it is a connecting structure for connecting a gastrostomy catheter which is fitted in a gastric fistula formed between the abdominal wall and gastrointestinal tract of a patient, and a fluid supply tube which is connected to the gastrostomy catheter for supplying fluid to the patient's gastrointestinal tract through a fluid passage provided in the gastrostomy catheter;
  • the section of the gastrostomy catheter which is disposed on the surface side of the abdominal wall at the gastric fistula comprises an external holding part having an opening into the fluid passage, and a guide part, of which the inner peripheral edge is substantially C-shaped or U-shaped when seen from above, is linked to the external holding part by a linking part, in a state in which it is spaced apart from the opening side of the external holding part; and a cylindrical engaging part is provided in the region of the tip end of a tube main body of the fluid supply tube, said engaging part being coaxial with the tube
  • a linking part extends from the external holding part of the gastrostomy catheter, and a guide part which is substantially C-shaped or U-shaped when seen from above is linked to the linking part.
  • the inner space of the substantially C-shaped or U-shaped guide part is positioned on the line of extension of the fluid passage, spaced apart from the external holding part.
  • a cylindrical engaging part is then provided coaxially with the tube main body towards the tip end of the tube main body of the fluid supply tube, and this engaging part is designed to make the tip end of the tube main body communicate with the opening of the external holding part by introducing the tube main body into the guide part from the open side thereof, in other words, by making the tube main body advance and engaging between the external holding part and the guide part from a direction which is substantially perpendicular to the fluid passage of the gastrostomy catheter.
  • the fluid supply tube is connected to the gastrostomy catheter by moving the engaging part in such a way that it slides laterally between the external holding part and the guide part, and there is no need to press the fluid supply tube into the gastrostomy catheter.
  • the external holding part does not press on the gastric fistula inside the body and does not become embedded.
  • the engaging part is provided coaxially with the tube main body, and therefore when the fluid supply tube has been connected to the gastrostomy catheter, the fluid passage of the gastrostomy catheter and the fluid passage of the fluid supply tube are joined substantially linearly.
  • the inner peripheral edge of the guide part should be substantially C-shaped or U-shaped, but the outer peripheral edge need not be substantially C-shaped or U-shaped.
  • the guide part consists of an elastic body, and a raised part is formed at the peripheral edge of the opening in the external holding part; the length between the section of the engaging part which is in contact with the guide part and the tip end of the tube main body is greater than the length between the raised part and the guide part, and when the engaging part and the section of the tube main body protruding from the engaging part which runs from a section in the region of the tip end of the tube main body to the tip end thereof are pushed between the raised part and the guide part so that the tip end of the tube main body is placed in communication with the opening of the external holding part, the engaging part is designed to be able to engage between the raised part and the guide part.
  • the operation to make the engaging part engage between the external holding part and the guide part is uncomplicated because it simply involves pushing the engaging part and the section of the tube main body protruding from the engaging part which runs from a section in the region of the tip end of the tube main body to the tip end thereof between the raised part and the guide part.
  • the guide part returns to its original state after it has been urged to bend in such a way that the space formed with the raised part widens.
  • the structures of the engaging part and the guide part can be simplified.
  • connection structure for a gastrostomy catheter and a fluid supply tube lie in the fact that the raised part is formed at the peripheral edge of the opening in the external holding part, and the length between the section of the engaging part which is in contact with the guide part and the tip end of the tube main body is greater than the length between the raised part and the guide part; and provision is made for a deforming mechanism which allows deformation under pressure at the raised part so that the length between the raised part and the guide part becomes greater, or provision is made for a deforming mechanism which allows deformation under pressure at the tip end of the tube main body so that the length between the section of the engaging part which is in contact with the guide part and the tip end of the tube main body becomes shorter.
  • the deforming mechanism in this case may comprise a soft material which is depressed and contracted by pressure on the raised part, or it may comprise a mechanism wherein a specific section advances or retracts by the application of pressure or the release of pressure.
  • the deforming mechanism may comprise a soft material which is depressed and contracted by pressure on the tip end of the tube main body, or it may comprise a mechanism wherein a specific section advances or retracts by the application of pressure or the release of pressure. That is to say, the deformation in this case involves depression and contraction etc., and the displacement involves a changing of position etc., in addition to the depression and contraction. This means that the operation to make the engaging part engage between the external holding part and the guide part is simplified.
  • connection structure for a gastrostomy catheter and a fluid supply tube lie in the fact that the deforming mechanism is configured by providing a spring mechanism inside the engaging part, for urging the tip end of the tube main body outwards with respect to the engaging part, and the tip end of the tube main body is caused to retract inside the engaging part by the application of pressure thereto.
  • the engaging part can engage between the external holding part and the guide part by holding the engaging part in the hand and pushing it between the external holding part and the guide part, and in this process, the tip end of the tube main body is pressed by the raised part so as to retract inside the engaging part.
  • the tip end of the tube main body in this case is made of a rigid material and even if the spring contracts under pressure, the tip end of the tube main body preferably does not contract and deform, or it only contracts and deforms by a smaller amount than the contraction of the spring.
  • the guide part consists of an elastic body, and respective protrusions are formed at both ends of the guide part on the faces opposite the external holding part; and when the engaging part is made to engage between the external holding part and the guide part, the guide part bends so that the protrusions go past the end face of the engaging part, after which these protrusions engage at the side of the engaging part. This means that the engagement between the engaging part and the guide part is more secure.
  • connection structure for a gastrostomy catheter and a fluid supply tube lie in the fact that the guide part and the linking part are constituted by a connecting member which is separate from the external holding part, and a circular fitting groove is formed in the circumferential direction of the external holding part on the outer peripheral surface of the external holding part; and a fitting part which is rotatably fitted in the circular fitting groove is included in the linking part.
  • the connecting member can rotate in the axial direction with respect to the gastrostomy catheter, and therefore cleaning is simplified when the external holding part of the gastrostomy catheter is soiled, or the like.
  • the gastrostomy catheter comprises: the external holding part; a tubular part which is disposed in such a way that the base end thereof is joined to the external holding part and the tip end section thereof extends from the gastric fistula into the gastrointestinal tract; and an internal holding part which is joined to the tip end of the tubular part and is disposed inside the gastrointestinal tract.
  • the gastrostomy catheter is not only properly attached inside the patient's body, but also outside the patient's body.
  • Figures 1 and 2 show a gastrostomy catheter 10, fluid supply channel 20 and connecting member 30 which make up the connecting structure for a gastrostomy catheter and a fluid supply tube, in accordance with this mode of embodiment.
  • the gastrostomy catheter 10 comprises an external holding part 11, a tubular part 12 which is joined at the centre on the lower surface of the external holding part 11, and an internal holding part 13 which is joined to the tip end of the tubular part 12.
  • the external holding part 11 side shall be referred to as the upper side/top/above
  • the internal holding part 13 side shall be referred to as the lower side/bottom/below.
  • the external holding part 11 comprises an insertion opening 11a which is formed as a fairly thick annular shape, and a pair of protrusions 11b which project outwards from both sides at the lower end on the outer periphery of the insertion opening 11a.
  • the protrusions 11b have the function of preventing the gastrostomy catheter 10 from becoming embedded inside the patient's body.
  • a fitting groove 11c for the attachment of the connecting member 30 is formed in the peripheral direction on the upper side of the protrusions 11b, at the outer peripheral surface of the insertion opening 11a.
  • An insertion hole 14 running vertically is then formed at the centre of the insertion opening 11a, and the diameter of an upper opening 14a of the insertion hole 14 becomes steadily greater from the bottom towards the top. Furthermore, the diameter of the top part on the outer periphery of the insertion opening 11a becomes steadily smaller from the bottom towards the top, and by means of this the centre of the top part on the outer periphery of the insertion opening 11a is formed as a raised curved face.
  • a check valve 16 which has a slit formed in the centre is then provided on the inner peripheral surface of the insertion hole 14.
  • the tubular part 12 consists of an elongate cylindrical body inside which is formed a fluid passage (not depicted) for the passage of fluids such as nutrients and food in fluid form, and the upper end of the fluid passage communicates with the insertion hole 14 of the external holding part 11.
  • the internal holding part 13 is connected to the tubular part 12 by way of a connector 12a which is fixed to the lower end of the tubular part 12.
  • the internal holding part 13 comprises four strip-shaped linking parts 13a which extend in four directions from the edge of the opening at the lower end of the connector 12a, and four linking film parts 13b which are provided between the upper parts of each of the linking parts 13a, and the tip ends of the linking parts 13a are linked to one another.
  • the fluid supply tube 20 comprises a tube main body 21 and an engaging part 22 which is attached towards the lower end of the tube main body 21.
  • the tube main body 21 consists of a soft tube having a fluid passage which communicates with the fluid passage of the tubular part 12, and it is substantially the same thickness as the tubular part 12.
  • the tip end 21a of the tubular main body 21 enters the engaging part 22 by contracting under pressure in the axial direction. Furthermore, the tip end 21a can be fitted in a liquid-tight state with the upper section of the external holding part 11 including the upper opening 14a of the insertion hole 14, and when the tip end is fitted into the insertion hole 14, the slit of the check valve 16 is opened.
  • the engaging part 22 consists of a cylindrical body made of a rigid resin material, and it is fixed to the outer periphery at the lower end of the tube main body 21 with the tip end 21a of the tube main body 21 able to be received therein.
  • the connecting member 30 comprises a fitting part 31 which fits into the fitting groove 11c, a guide part 32 which is disposed parallel to and spaced apart from the fitting part 31, and a linking part main body 33 which links the fitting part 31 and the guide part 32.
  • the linking part according to the present invention consists of the fitting part 31 and the linking part main body 33.
  • Figure 4 shows the connecting member 30 seen from the bottom, and the fitting part 31 consists of a substantially U-shaped plate.
  • the inside section on the substantially U-shaped inner peripheral edge of the fitting part 31 fits into the fitting groove 11c, whereby the connecting member 30 is rotatably assembled with the external holding member 11 of the gastrostomy catheter 10.
  • the guide part 32 consists of a substantially C-shaped plate when seen from above (not depicted), and it is arranged parallel to the fitting part 31 and spaced apart from the fitting part 31.
  • the space between the fitting part 31 and the guide part 32 is set so that the space between the raised part 15 of the external holding part 11 and the guide part 32 is substantially equal to the length of the engaging part 22 in the axial direction when the fitting part 31 has been fitted into the fitting groove 11c. Furthermore, the inner peripheral edge of the guide part 32 is formed in such a way that that the width between opposing sections on the open side (the right-hand section in Figure 4 ) becomes steadily narrower moving from the open side to the inside, and the inside thereof is formed to become substantially circular (C-shaped). Respective protrusions 32a are then formed at both ends on the lower surface of the guide part 32.
  • the portions lying on the open side of the guide part 32 are formed as tapers which are oriented steadily downwards moving from the open side to the inside of the guide part 32, and the portions lying on the inside of the guide part 32 are formed to be horizontal. Furthermore, the spacing of the pair of protrusions 32a is somewhat narrower than the outer diameter of the engaging part 22. As shown by the two-dot chain line in Figure 4 , when the engaging part 22 has engaged with the guide part 32, the pair of protrusions 32a are in contact with the outer peripheral surface of the engaging part 22, and the engaging part 22 is prevented from being removed from the guide part 32.
  • the linking part main body 33 links the central part of the top face of the fitting part 31 and the central part of the bottom face of the guide part 32, and it consists of a plate-like linking piece which has an arcuate shape in cross section (not depicted).
  • the fitting part 31 is first of all fitted into the fitting groove 11c of the external fitting part 11 to assemble the connecting member 30 with the gastrostomy catheter 10.
  • the two ends on the open side of the fitting part 31 are pushed into the two sides of the fitting groove 11c, and the connecting member 30 slides laterally with respect to the gastrostomy catheter 10.
  • the inside section on the inner peripheral edge of the fitting part 31 fits into the semicircular portion of the fitting groove 11c, and the connecting member 30 is assembled in a state in which it can rotate in the axial direction with respect to the gastrostomy catheter 10.
  • the engaging part 22 is positioned in the region between the open side section of the guide part 32 of the connecting member 30 and the raised part 15 of the gastrostomy catheter 10, and the fluid supply tube 20 is brought closer to the gastrostomy catheter 10. Then, as shown by the arrow, the fluid supply tube 20 is moved towards the gastrostomy catheter 10, and the engaging part 22 is pushed between the raised part 15 and the guide part 32.
  • the tip end 21a of the tube main body 21 is pressed by the raised part 15 and is received inside the engaging part 22, and the engaging part 22 enters between the raised part 15 and the guide part 32 while the upper ends on both sides of the engaging part 22 (the two sides at the front and rear in Figure 2 ) are pushed up against the tapered faces of the protrusions 32a.
  • the open side portion of the guide part 32 is bent upwards. Then, when the upper ends on both sides of the engaging part 22 have gone past the protrusions 32a, the tip end 21a of the tube main body 21 protrudes from the engaging part 22 so as to fit into the top section of the insertion hole 14 of the external holding part 11, and the state shown in Figure 1 is achieved. In this process, the tip end 21a of the tube main body 21 is in liquid-tight contact with the upper opening 14a, and the slit in the check valve 16 is opened. Furthermore, the guide part 32 returns to its original state and the protrusions 32a engage at the outer peripheral surface of the engaging part 22, as shown in Figure 4 . By means of this, the engaging part 22 is prevented from being removed from the gastrostomy catheter 10.
  • a supply apparatus housing the fluid has already been connected to the base end opening of the tube main body 21, and the fluid is supplied from the supply apparatus.
  • the fluid is supplied from the fluid passage of the tube main body 21, through the insertion hole 14 and fluid passage of the tubular part 12, and into the patient's gastrointestinal tract, for example into the stomach.
  • the connecting member 30 is turned to allow the whole surface of the external holding member 11 to be wiped.
  • the connecting member 30 provided with the guide part 32 is attached to the external holding part 11 of the gastrostomy catheter 10.
  • the engaging part 22 is then provided towards the tip end of the tube main body 21 of the fluid supply tube 20, and this engaging part 22 is pushed between the external holding part 11 and the guide part 32 so as to engage, whereby the tip end 21a of the tube main body 21 is placed in communication with the upper opening 14a of the external holding part 11.
  • the fluid supply tube 20 is connected to the gastrostomy catheter 10 by pushing the engaging part 22 laterally between the external holding part 11 and the guide part 32, and there is no need to press the fluid supply tube 20 into the gastrostomy catheter 10 from above. Thanks to this, the external holding part 11 does not become embedded by being pressed inside the body. Furthermore, when the fluid supply tube 20 has been connected to the gastrostomy catheter 10, the fluid passage of the gastrostomy catheter 10 and the fluid passage of the fluid supply tube 20 are joined substantially linearly, and therefore the fluid is not obstructed as it flows from the fluid supply tube 20 to the gastrostomy catheter 10, and leakage of the fluid at the connection between the gastrostomy catheter 10 and the fluid supply tube 20 is not likely to occur.
  • the tip end 21a of the tube main body 21 is made of a soft material, so when the tip end 21a is pressed, the tip end 21a contracts and is received inside the engaging part 22, and therefore the operation to make the engaging part 22 engage between the external holding part 11 and the guide part 32 is simplified.
  • the respective protrusions 32a are formed at the lower surface at both ends of the guide part 32 so that when the engaging part 22 has engaged between the external holding part 11 and the guide part 32, the protrusions 32a are designed to engage on the side of the engaging part 22, and therefore the engagement between the engaging part 22 and the guide part 32 is more secure.
  • the connecting member 30 is able to rotate with respect to the external holding part 11, and therefore cleaning is simpler when the external holding part 11 becomes soiled, or similar.
  • the internal holding part 13 is provided at the lower part of the gastrostomy catheter 10, and therefore the gastrostomy catheter 10 is prevented from being easily withdrawn from the body when the gastrostomy catheter 10 is pulled outwards from the body.
  • FIG. 5 shows a connecting member 40 of the connecting structure for a gastrostomy catheter and a fluid supply tube according to a second mode of embodiment of the present invention.
  • This connecting member 40 comprises a fitting part 41 which fits into the fitting groove 11c, a guide part 42 which is arranged parallel to and spaced apart from the fitting part 41, and a linking part main body (not depicted) which links the fitting part 41 and the guide part 42.
  • the fitting part 41 consists of a substantially U-shaped plate having the same shape as the fitting part 31 described above.
  • the guide part 42 consists of a substantially C-shaped plate when seen from above (not depicted), and it is disposed parallel to the fitting part 41 and spaced apart from the fitting part 41.
  • the inner peripheral edge of the guide part 42 is formed in such a way that that the width between opposing sections on the open side (the right-hand section in Figure 5 ) becomes steadily narrower moving from the open side to the inside, and the inside thereof is formed to become substantially circular (C-shaped), like the inner peripheral edge of the guide part 32 described above, but the substantially circular section on the inside is smaller than the circular section of the guide part 32.
  • the structures of the other components of the connecting structure for a gastrostomy catheter and a fluid supply tube according to this mode of embodiment are the same as those of the connecting structure for a gastrostomy catheter and a fluid supply tube according to the first mode of embodiment described above. Furthermore, with the connecting structure for a gastrostomy catheter and a fluid supply tube according to this mode of embodiment, the engaging part 22 engages between the external holding part 11 and the guide part 32, and the tube main body 21 engages within the inner peripheral edge of the guide part 42.
  • the other operational effects of the connecting structure for a gastrostomy catheter and a fluid supply tube according to this mode of embodiment are the same as those of the connecting structure for a gastrostomy catheter and a fluid supply tube according to the first mode of embodiment described above.
  • Figure 6 shows the main parts of a fluid supply tube 50 of the connecting structure for a gastrostomy catheter and a fluid supply tube according to a third mode of embodiment of the present invention.
  • the lower end of the soft tube main body comprises a rigid supporting cylinder 51 for supporting an engaging part 52.
  • This supporting cylinder 51 is joined to the upper portion of the tube main body by solvent-welding, and a flange-like spring-receiving part 51a is formed at the outer periphery of the lower section of the supporting cylinder 51.
  • the engaging part 52 is then fitted to the spring-receiving part 51a with a spring 53 interposed.
  • the engaging part 52 is provided with a ceiling part 52a and a bottom surface part 52b which lie at the top and bottom, respectively, of the cylindrical main body section, and are formed with a hole for the passage of the tube main body 51 therein.
  • the bottom surface part 52b is positioned below the spring-receiving part 51a, and the spring 53 is positioned between the ceiling part 52a and the spring-receiving part 51a, and the engaging part 52 is assembled with the supporting cylinder 51 in this way.
  • the engaging part 52 is urged upwards by the spring-receiving part 51a and the spring 53. Consequently, when the tip end 51b of the supporting cylinder 51 is pressed upwards with respect to the engaging part 52, the spring 53 contracts and the tip end 51b is received inside the engaging part 52.
  • the structures of the other components of the connecting structure for a gastrostomy catheter and a fluid supply tube according to this mode of embodiment are the same as those of the connecting structure for a gastrostomy catheter and a fluid supply tube according to the first mode of embodiment described above.
  • the connecting structure for a gastrostomy catheter and a fluid supply tube according to this mode of embodiment, when the tip end 51b of the supporting cylinder 51 is pressed, the spring 53 contracts and the tip end 51b is received inside the engaging part 52, and therefore the operation to make the engaging part 52 engage between the external holding part 11 and the guide part 32, and to release the engagement thereof is simplified.
  • the other operational effects of the connecting structure for a gastrostomy catheter and a fluid supply tube according to this mode of embodiment are the same as those of the connecting structure for a gastrostomy catheter and a fluid supply tube according to the first mode of embodiment described above.
  • the raised part 15 of the external holding part 11 of all of the modes of embodiment described above may be made of a soft material, and when the fluid supply tube 20 etc. is connected to the gastrostomy catheter 10, the tip end 21a etc. of the tube main body 21 etc. may be depressed by pressure on the raised part 15. This makes it possible to obtain the same operational effects as in each of the modes of embodiment described above.
  • the connecting structure for a gastrostomy catheter and a fluid supply tube according to the present invention is not limited to the modes of embodiment described above, and suitable modifications may be made within the technical scope of the present invention.
  • the connecting members 30, 40 are members which are separate from the external holding part 11, but the connecting members 30, 40 may be formed as a single piece with the external holding part 11.
  • the connecting member 30 is able to rotate in the axial direction with respect to the gastrostomy catheter 10, but the fitting groove 11c may consist of two grooves which are parallel rather than circular, and the connecting member 30 may not be able to rotate.
  • the internal holding part of the gastrostomy catheter may be a balloon-shaped (dome-shaped) part.
  • a concertina-type spring, or similar can be used instead of the coil spring 53 in the third mode of embodiment.
  • 10 ...gastrostomy catheter; 11...external holding part; 11c...fitting groove; 12...tubular part; 13...internal holding part; 14...insertion hole; 14a...upper opening; 15...raised part; 20, 50...fluid supply tube; 21...tube main body; 21a, 51b...tip end; 22, 52...engaging part; 30, 40...connecting member; 31, 41...fitting part; 32, 42...guide part; 32a...protrusion; 33...linking part main body.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Biomedical Technology (AREA)
  • Anesthesiology (AREA)
  • Biophysics (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
EP20100004667 2009-05-28 2010-05-04 Connecteur entre un cathéter pour gastrostomie et un tube d'alimentation en fluide Active EP2255775B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009128871A JP2010273846A (ja) 2009-05-28 2009-05-28 瘻孔カテーテルと流体供給用チューブとの接続構造

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EP2255775A2 true EP2255775A2 (fr) 2010-12-01
EP2255775A3 EP2255775A3 (fr) 2011-08-31
EP2255775B1 EP2255775B1 (fr) 2015-02-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013040133A1 (fr) * 2011-09-14 2013-03-21 Covidien Lp Cathéter fistule et procédés associés
EP2269563B1 (fr) * 2009-06-29 2016-04-27 Covidien LP Structure de connexion pour cathéter de gastrostomie et tube d'alimentation de fluide

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008504896A (ja) 2004-06-29 2008-02-21 シー アール バード インコーポレイテッド 胃瘻造設チューブとの流体連通を行うための方法およびシステム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4623548B2 (ja) * 2004-04-30 2011-02-02 日本シャーウッド株式会社 胃瘻形成管用伸展具
DE102005020648A1 (de) * 2005-05-03 2006-11-16 Sartorius Ag Verbinder, Verbindersystem und Verwendung
FR2903302B1 (fr) * 2006-07-06 2008-08-29 Stephane Regnault Montage d'un tube de gastrostomie sur une embase et bouton de gastrostomie

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008504896A (ja) 2004-06-29 2008-02-21 シー アール バード インコーポレイテッド 胃瘻造設チューブとの流体連通を行うための方法およびシステム

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2269563B1 (fr) * 2009-06-29 2016-04-27 Covidien LP Structure de connexion pour cathéter de gastrostomie et tube d'alimentation de fluide
WO2013040133A1 (fr) * 2011-09-14 2013-03-21 Covidien Lp Cathéter fistule et procédés associés
AU2012308676B2 (en) * 2011-09-14 2014-04-10 Kpr U.S., Llc Fistula catheter and related methods therefor
CN103813826A (zh) * 2011-09-14 2014-05-21 柯惠有限合伙公司 瘘管导管和其相关方法
CN103813826B (zh) * 2011-09-14 2015-07-22 柯惠有限合伙公司 瘘管导管和其相关方法
US9114066B2 (en) 2011-09-14 2015-08-25 Covidien Lp Fistula catheter and related methods therefor

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JP2010273846A (ja) 2010-12-09
EP2255775B1 (fr) 2015-02-25

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